4:5
Across
- 4. the point on which a lever rests or is supported and on which it pivots
- 5. a piece of wood, metal, or some other material having one thick end and tapering to a thin edge, that is driven between two objects or parts of an object to secure or separate them
- 7. Plane plane inclined at an angle to the horizontal
- 8. a simple lifting machine consisting of a rope that unwinds from a wheel onto a cylindrical drum or shaft joined to the wheel to provide mechanical advantage.
Down
- 1. A machine consisting of two or more simple machines operating together
- 2. a short, slender, sharp-pointed metal pin with a raised helical thread running around it and a slotted head, used to join things together by being rotated so that it pierces wood or other material and is held tightly in place
- 3. wheel with a grooved rim around which a cord passes.
- 6. a rigid bar resting on a pivot, used to help move a heavy or firmly fixed load with one end when pressure is applied to the other.